Concepts Exam 1

Question 1

Lack of Sodium?

Answer 1

paralysis

Question 2

Lack of potassium?

Answer 2

cramps

Question 3

Lack of Calcium?

Answer 3

paralysis

Question 4

Reason calcium and sodium go into paralysis?

Answer 4

signals from the nerves to a muscle, actin and myosin can’t bind, which causes the gates to not open, and no contraction is made.

Question 5

Efferent neuron

Answer 5

motor, towards the body

Question 6

Afferent neuron

Answer 6

sensory, toward brain

A = above, toward the head

Question 7

Name of myelin cells in CNS

Answer 7

oligodendrocytes

O leg - dendrocytes

Question 8

Name of myelin cells in PNS

Answer 8

Schwann cells

Question 9

What lives in grey matter?

Answer 9

cell bodes

Question 10

What lives in white matter?

Answer 10

axons

Question 11

Functions of skeletal system

Answer 11

support, protect, movement, storage, blood cell production

Question 12

Function of muscular system

Answer 12

movement, maintain posture, respiration, production of body heat, communication, heart beat, contraction of organs and vessels

Question 13

Slow twitch fibers

Answer 13

endurance, aerobic

Question 14

Fast twitch fibers

Answer 14

anerobic, ATP/PC

Question 15

Muscle Spindle (reflexes)

Answer 15

excitatory, contraction, “quick stretch”

Question 16

Golgi tendon organ (reflex)

Answer 16

inhibitory, relaxation, “slow stretch”

Question 17

Open chain

Answer 17

body segment is not fixed to an object, “isolated”

Question 18

Closed chain

Answer 18

body segment is fixed to an object, “compound”